Canada’s longest-running measles outbreak in decades has ended after more than two months without a linked case, but the country faces at least another year of monitoring before it can seek to restore elimination status.
Canada’s longest-running measles outbreak in decades is officially over, after health officials said there had been more than two months without a linked case. The Public Health Agency of Canada announced on 19 October 2026 that the multi-jurisdictional outbreak, which began in October 2024, had ended after spreading across 10 provinces and territories and causing more than 6,400 infections. Officials said most of those cases were among people who had not been vaccinated.
The end of the outbreak does not mean Canada has regained its measles-elimination status. That designation was lost in late 2025, after the same strain had circulated for more than 12 months. Health authorities say elimination status can only be restored after at least a year without sustained transmission of the same virus strain, which means Canada will need a longer stretch of calm surveillance results before that milestone can be reclaimed.
Public health officials continue to warn that imported cases can still appear, even after domestic transmission has been interrupted. The agency is urging Canadians to make sure they are fully immunised, particularly before travelling, and says two doses of measles-containing vaccine offer strong protection. It also advises people to check their records with a health-care provider or local public-health authority if they are unsure about their vaccination status.
The national announcement goes beyond recent provincial developments, including Manitoba’s own declaration that its outbreak had ended. Canada’s measles monitoring system, which tracks confirmed cases reported by provinces and territories, remains in place, and officials say they will keep watching for any new activity as they work towards restoring elimination status.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
